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/* $Id$ */
/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file settings_internal.h Functions and types used internally for the settings configurations. */
#ifndef SETTINGS_INTERNAL_H
#define SETTINGS_INTERNAL_H
#include "saveload/saveload.h"
#include "settings_type.h"
#include "strings_type.h"
/**
* Convention/Type of settings. This is then further specified if necessary
* with the SLE_ (SLE_VAR/SLE_FILE) enums in saveload.h
* @see VarTypes
* @see SettingDescBase
*/
enum SettingDescTypeLong {
/* 4 bytes allocated a maximum of 16 types for GenericType */
SDT_BEGIN = 0,
SDT_NUMX = 0, ///< any number-type
SDT_BOOLX = 1, ///< a boolean number
SDT_ONEOFMANY = 2, ///< bitmasked number where only ONE bit may be set
SDT_MANYOFMANY = 3, ///< bitmasked number where MULTIPLE bits may be set
SDT_INTLIST = 4, ///< list of integers seperated by a comma ','
SDT_STRING = 5, ///< string with a pre-allocated buffer
SDT_END,
/* 10 more possible primitives */
};
typedef SimpleTinyEnumT<SettingDescTypeLong, byte> SettingDescType;
enum SettingGuiFlagLong {
/* 1 byte allocated for a maximum of 8 flags
* Flags directing saving/loading of a variable */
SGF_NONE = 0,
SGF_0ISDISABLED = 1 << 0, ///< a value of zero means the feature is disabled
SGF_NOCOMMA = 1 << 1, ///< number without any thousand seperators (no formatting)
SGF_MULTISTRING = 1 << 2, ///< the value represents a limited number of string-options (internally integer)
SGF_NETWORK_ONLY = 1 << 3, ///< this setting only applies to network games
SGF_CURRENCY = 1 << 4, ///< the number represents money, so when reading value multiply by exchange rate
SGF_NO_NETWORK = 1 << 5, ///< this setting does not apply to network games; it may not be changed during the game
SGF_NEWGAME_ONLY = 1 << 6, ///< this setting cannot be changed in a game
SGF_SCENEDIT_TOO = 1 << 7, ///< this setting can be changed in the scenario editor (only makes sense when SGF_NEWGAME_ONLY is set)
SGF_PER_COMPANY = 1 << 8, ///< this setting can be different for each company (saved in company struct)
};
DECLARE_ENUM_AS_BIT_SET(SettingGuiFlagLong)
typedef SimpleTinyEnumT<SettingGuiFlagLong, uint16> SettingGuiFlag;
typedef bool OnChange(int32 var); ///< callback prototype on data modification
typedef size_t OnConvert(const char *value); ///< callback prototype for convertion error
/** Properties of config file settings. */
struct SettingDescBase {
const char *name; ///< name of the setting. Used in configuration file and for console
const void *def; ///< default value given when none is present
SettingDescType cmd; ///< various flags for the variable
SettingGuiFlag flags; ///< handles how a setting would show up in the GUI (text/currency, etc.)
int32 min; ///< minimum values
uint32 max; ///< maximum values
int32 interval; ///< the interval to use between settings in the 'settings' window. If interval is '0' the interval is dynamically determined
const char *many; ///< ONE/MANY_OF_MANY: string of possible values for this type
StringID str; ///< (translated) string with descriptive text; gui and console
StringID val_str; ///< (translated) first string describing the value.
OnChange *proc; ///< callback procedure for when the value is changed
OnConvert *proc_cnvt; ///< callback procedure when loading value mechanism fails
};
struct SettingDesc {
SettingDescBase desc; ///< Settings structure (going to configuration file)
SaveLoad save; ///< Internal structure (going to savegame, parts to config)
};
/* NOTE: The only difference between SettingDesc and SettingDescGlob is
* that one uses global variables as a source and the other offsets
* in a struct which are bound to a certain variable during runtime.
* The only way to differentiate between these two is to check if an object
* has been passed to the function or not. If not, then it is a global variable
* and save->variable has its address, otherwise save->variable only holds the
* offset in a certain struct */
typedef SettingDesc SettingDescGlobVarList;
const SettingDesc *GetSettingFromName(const char *name, uint *i);
bool SetSettingValue(uint index, int32 value, bool force_newgame = false);
bool SetSettingValue(uint index, const char *value, bool force_newgame = false);
void SetCompanySetting(uint index, int32 value);
#endif /* SETTINGS_INTERNAL_H */
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